[PATCH] drm/i915/hdmi: only enable audio if there's a hdmi sink

[Adam Jackson]

On 8/30/12 3:44 AM, Daniel Vetter wrote:
> Some monitors totally don't like to receive infoframes, and naturally
> don't claim to support hdmi.
>
> But for some odd reason they've added a CEA block to their edid,
> which automatically gives you basic audio. Still, we may not send
> out hdmi infoframes to them, hence check whether the sink is indeed
> hdmi capable.
>
> Also kill a stale comment while at it.

Does an incomplete version of what it says on the box, you need to hit 
the HDMI code in intel_sdvo.c too.

At which point, should do the obvious bool drm_monitor_has_hdmi_audio() 
in drm_edid.c.

- ajax